Cat 5

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Cat 5

This article is provided by FOLDOC - Free Online Dictionary of Computing (

cable categories

Following are the categories for telephone and Ethernet cables, which are abbreviated "Cat." For HDMI video cables, see HDMI cable types.

Cat1 and Cat2 are unofficial voice grade standards, while the rest are based on the EIA/TIA-568-B standards. Ethernet wiring today starts at Cat5e. Cat8 is for short distances in datacenters. See twisted pair.

Cat  Type of      Bandwidth    Data#    Cable         (MHz)      Rate

  8   ScTP/STP     2000 MHz   40-100 Gbps
  7a  ScTP/STP     1000 MHz   10 Gbps
  7   ScTP/STP      600 MHz   10 Gbps
  6a  UTP/ScTP/STP  500 MHz   10 Gbps
  6   UTP/ScTP/STP  250 MHz   10 Gbps
  5e  UTP/ScTP/STP  100 MHz    1 Gbps

  5   UTP/ScTP/STP  100 MHz    1 Gbps
  4   UTP/ScTP/STP   20 MHz   16 Mbps
  3   UTP/ScTP/STP   16 MHz    4 Mbps
  2   UTP             4 MHz    4 Mbps
  1   UTP             1 MHz    Analog

Cat5e Is Entry Level Today
To be more resistant to crosstalk, Cat5e wires are twisted more tightly inside the cable than Cat5. Because Gigabit Ethernet is found on every new computer, Cat5e is the basic Ethernet cable today.

Cat7 - Shielded and 10 Gbps
Cat7 cables (top) and Cat5e (bottom) have the same four sets of twisted pair. However, Cat7 shields each pair separately and wraps all four together in a metal sheath or strands of wire as in this example.
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References in periodicals archive ?
Sometimes referred to as twisted pair wiring because it's composed of four pairs of twisted wires encased in a plastic covering, category 5 cable carries data up to 13 megabytes per second.
"Prior to Hurricane Katrina, the Superdome relied primarily on an outdated copper infrastructure that included over 40,000 pairs of Category 3 and 10,000 pairs of Category 5 cable," explains Stewart.
Vivato's Wi-Fi system eliminated the need to trench fiber optic cable to the buildings and run Category 5 cable to the existing access points within the buildings.
Connect NICs to the hub with "Fast" Category 5 cable (or Cat 5) for even better performance than regular Cat 5.
There is also a human resources training center and a category 5 cable based building-wide TV distribution system.
The StarTech Console Extender UTP consists of two separate pieces - a base unit that connects to the PC or keyboard, video and mouse switch, and a remote unit that connects the keyboard, monitor and mouse - joined by a category 5 cable.
1-Gigabit Ethernet was designed for enhanced Category 5 cable with a positive ACR at 100 MHz.
While an average voice/data job takes three to four months to install cable for 250 traders, a portion of a project installing 250,000 feet of Category 5 cable was recently completed for Societe Generale in a 48 hour period - a highly difficult feat.
By using the Category 5 cable for power, as well as data, the product reduces the complexity of installation, affords greater flexibility in locating the unit and reduces installation costs.